Pump.



PATENTED JAN. 16, 1906,

H. BEAU.

4 PUMP. APPLICATION FILED JUNE 27, 1898- HENRI BEAU, OF PARIS, FRANCE.

PUMP.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed June 27, 1898. Seria1No. 684,584.

To (ZZZ whmn it may concern.-

Be it known that I, HENRI BEAU, a citizen of the Republic of France, residing at Paris, France, have invented an Improvement in Fumps, of which the following is a specificatlon.

This invention relates to a new or improved pump constructed according to the theories set forth in my prior patent, dated July 26, 1898, No. 607,910.

The new pump, which is exceedingly simple in construction and mode of operation, is illustrated in the accompanying drawings.

Figures 1 and 2 are sectional elevations showing two different positions of my improved pump.

A pipe A open at both ends has its lower part plunged in a reservoir B, which latter is furnished with a suction-valve O, the same pipe A opening at the top into a dischargereservoir D. A piston P works loosely in the tube A, so that water may pass from below the piston to above the same.

The working of the pump is very simple. The apparatus being filled with liquid, an aircushion is formed in the upper part b of the reservoir B. Now to start the device the piston P is suddenly pressed downward by hand or otherwise, and the same will be brought into the position shown in Fig. 1, and during this movement some of the water will pass from below the piston to above the same, and said downward movement of the piston, amplified by the weight of the liquid above it, causes the compression of the air contained in the space I) of the reservoir. If at this mo- .ment the piston P is released, the compressed air exerts an expansive action upon the water in'the reservoir B, thus forcing the water into the tube A and raising the piston, which takes the position shownin Fig. 2, a tertain quantity of liquid being discharged from the reservoir D; but during this rise the column of water forming a partial vacuum behind it the suction-valve C opens'and admits into the lower reservoir B a quantity of liquid equal to that discharged from the upper reservoir D. At this moment the column of liquid tends to resume its original position and closes the suction-valve C. This is the time for giving the second stroke of the piston, which again compresses the body of air in the part b. In fact, the more promptly the retrograde action of the column of iquid is followed up by the next stroke of the piston the less will be the amount of force required to get a definite result. The actuating force must thus be suitably rythmic, as has been before stated. In certain cases the body of air may be replaced by springs or by elastic walls arranged in a suitable manner.

What I claim, and desire to secure by Letters Patent, is

The combination with a lower reservoir and an inwardly-opening valve arranged in the bottom thereof, of an upper reservoir, a tube leading from the latter down within the lower reservoir 'to a point somewhat below the upper end of the lower reservoir whereby when water is within the latter an air-space will be formed above the surface of the water as described, and a piston fitting loosely with HENRI BEAU.

Witnesses EDWARD P. MAOLEAN, S. AN. WATRAX. 

